Authentic Walbro Fuel pump?

[Nodnarb76]

Well after checking a few more things, I have determined that my low fuel pressure problem must be my fuel pump going bad. I have replaced the regulator, inline filter, and even the gauge on my fuel rail.
I checked and have 12.1 volts at the plug for the pump.
the fuel pressure drops to zero as soon as the truck is turned off.

After doing some research on Walbro fuel pumps, I have found out there are a lot of fakes out there. When I bought my pump 3 years ago, I paid $60 for it off ebay so I am pretty sure it was a fake and that may be why it failed on me.

So I don't go through this again, where is the best place to buy a genuine Walbro GSS342 fuel pump?